with the thousands of mail in ballots. kron 4's justine waldman has more. >> reporter: the votes are already being counted in contra costa county. >> we have been working double shifts to get them counted. >> reporter: he tells me his office sent out 310,000 vote by mail ballots. as of monday night, 185,000 have been tallied and put in boxes with more on the way. >> we will get 40,000 tomorrow. >> reporter: to keep them from jamming any of the machines, workers smoothed out any ridges. there are ways to fix ballots with mistake. >> coffee will pick up on a target, we have to remake that ballot. ballots that are torn. chewed up by a machine. >> reporter: it takes two people to transfer the information. >> contra costa county. measure a. we have yes. >> he wants voters to remember one thing. >> if you don't get it to us by 8:00, it doesn't count. >> reporter: in contra costa county just seen w, kron 4 news -- just teen w, kron 4 news -- justine waldman, kron 4 news. >> measure n will place a tax on sugary drinks, soda, sports drink. the tax would not apply to 100% juice drinks nor on sweetened milk.